Side cranking device



' Sept. 24, 1929. D. BROWN s I v SIDE CRANKING DEVICE' Filed April 2'7,1926 3 Shets-mxeet 2) ,Tflven/or Sept. 24, 1929. D, BROWN 1,729, l50

SIDE CRANKING DmvIcE Fi'led April 27. 1926 3 Sheets-Sheet 2 sept. 24,1929. D; BROWN 1,72.9,15o,:

SIDE GRANKING DEICE Filed April 27. 1926 3 Sheets-Sneet 3 1 w ad w m3Nmv Sm. mm. m ma. ww I Patented Sept. 24, 1929 UNITED sTA'rEs ;DAVISBROWN, OF BUCYRUS, OHIO SIDE caANxnvG mi'vrcii Application filed April27,

plant. As is well known, the power plants of tractors and the like arenot provided with self-starting devices and it is the universal customto start such power plants by means of a crank. In certain types ofthese roadworking and hauling machines, the power plant of a tractor hasits front end supported on or adj acent to the rear end of a forwardlyextendi'ng arched frame and on such arched frame are placed notl onlythe Operating mechanisms for the tools carried on the frame, but alsothe platform'on which the operator of the machine not only controls thetools carried by the frame but also controls the power plant of thedevice. The

a starting crank of the power plant is, of course, available and in viewunder the arched portion of the frame and sometimes under the operatorsplatform but is not in position where it may be rea'dily manipulated.Various attempts have been made to devise a i means for Operating saidcrank or turning over the engine shaft by nieansextending laterally of aframe and, as far as I am aware,

v 'none of such devices have been successful.

In my present invention, I have supplied this existing wantand haveproduced a side cranking device which may be readily at'- tached to thelower forward portion of the power plant of the road-working or othermachine,-said side crankingdevice being as- A sociated with the normallyfree running end of the crank shaft of the engine. I preferably'make mydevice so as to be operable from either side of the framework of themachine msze.4 serial No. 104,991

and also make the device as anv attachment 'i which' is readily secured`to the bolster sup- 'porting or frontiof the engine and the radi- .Vator there'for. '7

' The principal object of my invention, therefore, is an improved sidecranking device for tractor engines, and the like;

Another' object of'my inventionf is a unitary structure ad'apted to beattached to'the front end of a tractorengine.

Other objectsand novel features of the construction and. arrangement ofparts comprising the improved structure will appear as the description`of the invention progresses.

' In the accompanying drawings illustrating the preferred embodiment ofmy invention,

Fig; 1 is a front'el'evation;

Fig. 2 is' a sectional side elevation on the line 2-2'0f Fig. 1; i

- Fig. 3 is a sectional plan view on the line 3-3 of Fig. 1;

Fig. 4 is a partial right side elevation;

Fig.` 5 is a sectional elevation on the line 5 5 of Fig. 2, and

Fig. 6 is an elevation of the combined pinion and cam sleeve. i

w Referrng tothe drawings, 10 designates the front axle pivotallymounted on a horizontal king pin 11 secured to the downwardly spacedlugs 12, formed integral with a casting 13 that is secured ordinaril'yto the front portion of the powerO plant of the tractor. `This memberV13 extends upwardly and forwardly and has secured to its upper front endthe radiator shell 14, 'on which is secured the usual radiator 15.Formed in the casting 13 is a sleeve bearing 16 in which is rotatablymounted 'Li-starting shaft 17, that is in axial alinement with the usualcrank shaft 18 of the power plant of the tractor, this shaft havingsecured at its/front end a` fan pulley 19 and over which `runs 'theusual fan belt 20. Formed on the inner front face of the pulley 1-9 areratchet teeth 21, with which may engage the diametrically arranged pin22 .se-

cured to the shaft 17 -adjacent the rear end thereof. As ordinarilyarranged, the shaft 17 is formed integral With a crank and may be pushedinwardly or to the right, as shown in Fig. 2, until the pin 22 engageswith the ratchet teeth 21. By this means, the crank shaft 18 is rotatedin a clockwise direction until the engine starts, when the speed of theengine, being greater than the speed of revolution ofthe shaft 17--whichis inanually operated the curved back of the ratchelt teeth 21 Will'ride on force theshafts18/to the left, as =viewed'in Fig. 2, untilthesame comes into substantially the position shown in suchv figure.shaft 17 is ordinarily assisted by a spring.

23 designates a casting havingformedf'in tegral therewith and extendingrearwardly therefrom, one side thereof, a memberV 24,.

this member 24 being drilled toreceive a Vvertically positionedfboltl25,to be' hereinafter referre to. Also formed integral with the member 23;extending rearwardly'therefroln, atthe side opposite the member 24, is amembeil`` 26,=which isforked, as clearly shown in FigiA 4; and-rotatablymountedin the forked ends on bolt 271, is alink 28, the rearward endofthisflink being drilled to receive a second as'above described,tojtheV under face of the vertically mounted bolt 25,` to be hereinafterreferredto. B'y referring-to Fig; 3, it will be seen' that the bolts 25"in the memberl 24 and link'28 respectively are in substantially the same-verticalplane that'- passe's-Verticall'y. and at right anglesthroughthe sleeve bear-ing 16.

' On the under face of the radiator base 14 are bosses 29 andfirmlysecure the member23=to theradfiator base 14` or in therelativepositrionthereto, as shown in Fig. 1'. Centrally' formed on the member 23fi`sacasting-30jand W ofi thefirearwardsurfaceoffsucli casting30 is formedVa bearing 31. On'fthe front' surface of sueli casting 30`i's formed abearing" 32 and' also a castin 33`,which, in turn, has formedon-itsfront ace a bearing 34; The bearings 31, 32,' and 34, when themiember`23 is secured,

radiator base 14,` are not only in alinement with eaclilother but are insubstantial aline-V lmentwith the bearing sleeve 16. Should* the fgroupl of bearings 31,32, and 34, and theV sleeve bearing 16 not comeexactly into alinement byprop'er manipulation of the bolt' 27' and thevbolt 25, both associatedwith'the link 28, such groupsof'bearings may bebroughtV into; substanti'al alinement with each other. The shaft 17fits, therefore, not only a bearifngin tiesleeve bearing 16, but also abeari'ngi'nthe-be'aring members 31, 32 and 34, and' extends forwardlybeyond the limits of the; casting '33' a suflicient` distance to allowthe This retrogrademovement of theplacing thereon of a washer 35 and acoil spring 36, the washer being prevented from ready removal from theshaft 17 by a cotter pin 37. Formed integral with the member 23 andextending out laterally from the casting 30 on each side thereof, arebearing sleeves 38, these bearing sleeves extending, therefore, at rightangles to the shaft 17. Rotatably mounted in each of the sleeve bearings38 are shafts 39 and secured to the inner ends of each of said shaftsare bevel gears 40 of any desired' or convenient' diameter and pitch.rPhe shafts 39 extend outwardbeyondt'he limitsof the sleeve bearings 38and extending throughsuch-ends are pins 41, these pins being adapted tobe engaged by the ratchet teeth 42, formedgonga sleeve 43, secured bypin 44 to the end of a starting crank 45. Slidablymounte'donz.theizshaft 17 but rotatable there-- with, is a bevel gear 46which meshes with and may be d'riVen by either-or both off'fthe bevelgears 40. Formed integral' wit-hthe bevel gearl 46 is aI hub sleeve 47'and? in this hub sleeve is formed a cam race 48, in which is-adaptedto-wor-ka pin 49 that' is securedit-o'- andv eXt-endsdiametrieally of thel shaft? 17. I'nithe casting33 is arranged alsplit-.bearing block composed of the upper andJ lower members 50l and'51 respectively. Rotatably mounted' in themxembers'O and 512- isa split*Ward?V from the shaft 17 Through the mein-'e bersg50tand 51, on-eitherside of the'lbearing sleeve '52, are threaded bolts 55',l thesethreadedbolts'extending upwardly beyond? the topof the memberg51 and areprovidfediwithnuts 56 intheir ends. Between the under surface-of? the-nuts 56-and the upper surfac'eof` the-bearingme'mber 5`1i andon thebolts 55'are 'coiled Springs 57, the function of the boltsA 55ffandspring 57 being to hold the bearing vmembers 50 and1151 together underyielding tension and* thisl tension-in ay be regulated by 'properadjust'ment of=the `nuts-56. The degreeof' freedom ofrotary movement of;the sleeVe52,a-.nd therefore 'the shaft 17, in the bearing'members 50and 51, :nay be regulated at= will. tension is ordinarily regulated sothat preliminary rotary moVement-ofthe bevel'` gear 46 will* cause,throughV the cam. race48f and pin 49, a longitudinal movement of the'shaft 1,7 to the right, as viewedin Fig` 2,' and until`` possible, Ihave providedtop and bottomcoveringplates 58'and'59 respectively for?the Thisl casting 30, these coverpl'ates being heldin position by bolts60.

The` operation of; my improved'devi'ceis asfiffollows, itI beingassumed'that saiddevice: 7

has been constructed and assembled as above described and that thepovver plant to which it is attached is incorporated in a road-gradingor other machine Where ordinarily it is dilficult to utilize theordinary form of manual starting device:

The operator takes the crank 45 and places the same on either of theshafts 39 in the position shown, for example in Fig. 1. Should it be sodesired, two operators may each take a crank 45 and place said cranks onthe shafts 39 on either side of the machine. The crank is turned in sucha Way as to rotate the shaft 39 in a clockvvise direction and,therefore, to rotate the shaft 17 in a clockwise direction. Thepreliminary rotation of the shafts 39 Will, however, cause, through therotation of the gears 40, the rotation of the gear 46 in a clockwisedirection through practioally a full revolution before any rotativemovement takes part on the place of the shaft 17. The rotative movementof the gear 17 Will cause the cam race 48 on the sleeve thereof toengagewith the pin 49 on the shaft 17 and said shaft 17 Will move rearward orto the right, as shown in Fig. 2, until the pin 22 thereon engages Withthe teeth of the ratchet 21. At this time, the pin 49 Will have engagedwith the end of the cam race 48 and further rotative movement of thegear 46 Will cause a rotative movement of the shaft 17. During thislongitudinal movement of the shaft 17,

the spring 36 Will have been compressed and Will remain compresseduntil, for example, the engine, of which the crank shaft 18 forms apart, starts in motion, When the more rapid motion of the engine shaft18 Will cause the ratchet teeth 21 to force the shaft 17 to the left, asviewed in Fig. 2, and such movement Will be assisted by the expansion ofthe spring 36.

lVhile I have necessarily shown the preferred embodiment of my inventionsomewhat in detail, it is to be understood that I may vary the size,Shape, and arrangement of parts comprising the device Within wide limitswithout departing from the spirit of the invention.

Having thus described my invention, What I claim as new is:

An improved side cranking device for internal combustion enginescomprising a base, means for adjustably mounting said base in positionon an internal combustion engine,

i a starting' shaft mounted for longitudinal and rotary movement in saidbase, said longitudinal movement being toward and from the crank shaftof the internal combustion' engine and in aXial ailignment therewith,spring means mounted on said starting shaft and associated with saidbase, Whereby the starting shaft is yieldingly held in operativeposition with relation to the engine crank shaft, a bevel gear rotatablymounted on said starting shaft, a cam formed in the hub of said gear, acam pin extending radially out- Ward from said starting shaft andengaging in said cam, a pair of shafts rotatably mounted in said base inalignment With each other, at right angles .to the starting shaft and onlopposite sides thereof, bevel gears on each of DAVIS BROWN.

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